Starting at the Heinz HQ we checked the woods for migrating
Warblers with little success. We headed across the large boardwalk and down
the dyke trail to the observation tower. Along the way we saw Cooper's Hawk,
Peregrine Falcon, Black-crowned Night Heron imm, Northern Harrier, Great Egret,
Snowy Egret, Little Blue Heron and Yellow-billed Cuckoo. Arriving at the observation
tower we saw a raft of Blue-winged Teal. The best part of the walk was watching
20+ Black Terns in various plumages at close range that moved across our view
several times. Chris Walters and
Frank Windfelder entertained
us with stories about birding at Tinicum in the past. We birded our way back
to the parking area and finished at 11 AM.